现今的界面都是五颜六色、动态十足，但在90年代末期，苹果和微软的操作系统都很简单，看上去灰蒙蒙的，有着箱子式的窗口、尖角和许多斜角。

Interfaces these days are colorful and dynamic, but in the late 1990s, both Apple's and Microsoft's operating systems were plain and gray, with boxy Windows, sharp corners, and lots of bevels.

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方法观察了198例各类终末期肝病患者在肝脏移植围手术期间血浆AT的动态变化。

Methods Observed alterations of AT in 198 cases of end stage liver disease in liver transplant patients during surgery period.

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